How to get the output of a console application from Java

July 19, 2009 at 11:05 am (Java, Linux)
Tags: code, command, command line, console, exec, input stream, Java, jstack, Linux, output, pid, process, runtime, sample, stack trace, thread dump

Of course; I was trying to get a thread dump using jstack here. You would need to change the command that Runtime.exec() executes to your liking.

Process threadDump=Runtime.getRuntime().exec("jstack -l "+pid);
BufferedReader br=new BufferedReader(new InputStreamReader(threadDump.getInputStream()));
while(true)
{
String line=br.readLine();
if(line==null)
      break;
else {
      //Do whatever you want
}